How many pounds in a keg?

A standard full-size keg, often referred to as a half-barrel keg, contains 15.5 gallons of beer, which weighs approximately 130 pounds when full. There are also smaller kegs, such as the quarter-barrel (7.75 gallons) and sixth-barrel (5.16 gallons), weighing around 87 pounds and 55 pounds, respectively, when full. The weight may vary slightly depending on the type of beer and its specific gravity.